Forced Operating Mode (Emergency Operation) - Daikin SkyAir Service Manual

SiBE28-804
1.2

Forced Operating Mode (Emergency Operation)

Purpose The table below describes the purpose of the forced operating mode.
If...
Starting You can operate the system manually by changing the emergency switch on the indoor and
outdoor PC board from "normal" to "emergency". When the system is operating in "emergency"
conditions
it can not control the room temperature.
Both the indoor and outdoor unit must be set to "emergency" while the power is off.
Ending You can end the emergency operation by changing the "emergency" switch back to "normal"
conditions while the power is OFF.
Emergency Below table explains what will happen when the switch is set to "emergency":
operation
Changing the switch to "emergency" for the... Switches ON the...
Indoor unit
Outdoor unit
How to set To set emergency operation, proceed as follows:
Emergency
Step
Operation
1
2
3
Functional Description
Then...
R/C is defective Forced operating mode can be used to go to cooling or heating. In
Indoor PC board is forced operating mode, the compressor is forced to operate until the
defective defective indoor or outdoor PC board is back online.
Outdoor PC board is
defective
Action
Turn OFF the power.
Switch ON the emergency switch (SS1) on the indoor PC board.
Emergency
Switch ON the emergency switch on the outdoor PC board.
EMERGENCY
ON COOL
1 2 3 4
OFF HEAT
Indoor fan
Drain pump
Compressor
Outdoor fan(s)
Normal
General Functionality
35